From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dieter =?iso-8859-1?q?N=FCtzel?= Subject: Re: Horrible ftruncate performance Date: Wed, 23 Jul 2003 15:46:38 +0200 Message-ID: <200307231546.38557.Dieter.Nuetzel@hamburg.de> References: <200307231425.17476.Dieter.Nuetzel@hamburg.de> <3F1E9004.6040800@namesys.com> Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Return-path: list-help: list-unsubscribe: list-post: Errors-To: flx@namesys.com In-Reply-To: <3F1E9004.6040800@namesys.com> Content-Disposition: inline List-Id: Content-Type: text/plain; charset="iso-8859-1" To: Hans Reiser Cc: Chris Mason , ReiserFS List Am Mittwoch, 23. Juli 2003 15:39 schrieb Hans Reiser: > Dieter N=FCtzel wrote: > >Am Dienstag, 22. Juli 2003 20:09 schrieb Hans Reiser: > >>Chris Mason wrote: > >>>On Tue, 2003-07-22 at 12:43, Hans Reiser wrote: [-] > >>V3 is in feature freeze. Unfortunately, determining what is a feature > >>and what is a bug is a process based not just on the user experience, > >>but on the structure of the code. The proper fix for this bug is to add > >>a feature called extents. This belongs in, and is in, V4. V4 will be > >>available very soon. > > > >And "coplete" stable from the beginning? --- Come on. > > I have been consistently clear in everything I say that V4 will not be > as stable as V3 for quite some time. That is because V3 will not > significantly change except for bug fixes, whereas V4 is fresh new code. Yes OK, we all know that and it is _right_.=20 > V3 has been dropping in bug reports for quite some time. Unfortunately > I have to say we got some this month (direct IO stuff). I know this. Andrea Arcangeli's -aa kernels have direct-IO for ages. > >>Adding features, like new kinds of items, will disturb the stability of > >>V3. V3 needs to be zero defect. It is now in a phase in its lifetime > >>where conservatism is appropriate. > > > >I'll accept this fix in V3 before I "move" to V4. > > > >-Dieter > > Most users need for their filesystems to at some point finally get left > alone and not disturbed. This is the whole idea behind freeze and > release based development. Very true. > Extents are a nice feature, but they belong in V4 not V3. Nobody asked about extents fro V3. > Effort spent > developing extents for V3 is better spent stabilizing V4 which already > has them and a lot more. Yes. But we have OSS. If someone have some time... Hans, please do not do "full quotes" in mailing list. Thank you! =2DDieter =2D-=20 Dieter N=FCtzel Graduate Student, Computer Science